DHX36 Enhances RIG-I Signaling by Facilitating PKR-Mediated Antiviral Stress Granule Formation

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Cellular responses to environmental stress are critical for maintaining homeostasis in living organisms. In one type of response, eukaryotic cells exhibit rapid formation of aggregates with RNA and multiple RNA-binding proteins in the cytoplasm termed stress granules (SGs). Over the past decade, SGs have been suggested to be important compartments and play essential roles in cellular stress responses. We have previously reported that virus infection induced SG-like aggregates and are crucial for antiviral response, therefore termed them as antiviral (av) SGs. In this report, we describe a novel function of DExD/H box RNA helicase 36 (DHX36), as a critical activator of double-stranded RNA (dsRNA)-dependent protein kinase (PKR), which directly trigger avSG formation in virus-infected cells. Our results reveal a novel link between DHX36 and avSG which functions as a platform to facilitate sensing of viral invasion and triggering antiviral responses.

Vyšlo v časopise: DHX36 Enhances RIG-I Signaling by Facilitating PKR-Mediated Antiviral Stress Granule Formation. PLoS Pathog 10(3): e32767. doi:10.1371/journal.ppat.1004012
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1004012

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